How to Clean Karndean Flooring (Without Voiding the Warranty)

To clean Karndean flooring, sweep or vacuum it regularly, then mop with a well-wrung flat microfibre mop and a pH-neutral cleaner — ideally Karndean’s own Karndean Clean, diluted at around 50ml per 8–10 litres of water. The two rules that protect both the floor and your warranty: never use a steam mop, and never use bleach, ammonia or abrasive cleaners. That’s genuinely all a Karndean floor needs to stay looking new for years.

Karndean is luxury vinyl tile (LVT), and it’s tougher and lower-maintenance than the wood or stone it imitates — but the protective wear layer that gives it that durability is exactly what harsh cleaning destroys. This guide covers the correct daily and weekly routine straight from Karndean’s own advice, how to deal with spills, scuffs and stubborn marks safely, the “Clean Start” and “Refresh” system for reviving a dull floor, and the handful of mistakes that void the warranty. Get the method right and Karndean is one of the easiest floors in the house to live with.

⚠️ Never steam clean Karndean (it voids the warranty)

The most important thing on this page: Karndean does not recommend steam mops, and using one can void your warranty. It’s a common mistake because steam mops are marketed as safe for “sealed hard floors”, but Karndean is vinyl. The heat and forced moisture from a steam mop can penetrate the protective wear layer and the joints, causing the vinyl to discolour, lift and deteriorate over time — damage that often doesn’t show until it’s permanent.

So however tempting the steam mop in the cupboard is, keep it away from Karndean. A flat microfibre mop with pH-neutral cleaner cleans just as effectively without the risk. If you’ve been steaming your floor and it still looks fine, stop now — the damage is cumulative.

What to use — and what to keep away from Karndean

A quick word on washing-up liquid: it’s fine in an emergency but it leaves a residue that builds up and dulls the floor, so it’s not ideal for regular use. And avoid over-wetting — Karndean doesn’t need a soaking, just a damp mop. If you use a vacuum, switch off the beater bar or use the hard-floor setting so it doesn’t scuff the wear layer.

How to clean Karndean flooring: the routine

Daily / regular

• Sweep or vacuum with a soft broom or a vacuum on the hard-floor setting to lift grit and dust. Grit is the main thing that scratches LVT, so doing this often is the single best habit.
• Wipe up spills promptly so nothing sits on the surface or seeps into the joints.

Weekly (or as needed)

1. Sweep or vacuum first — always, before any wet cleaning.
2. Mix your cleaner: around 50ml of Karndean Clean (or a pH-neutral vinyl-safe cleaner) per 8–10 litres of warm water.
3. Mop with a well-wrung flat microfibre mop. Damp, not wet — you want the floor to dry quickly, not sit under standing water.
4. Work in sections, rinsing the mop as it picks up dirt. There’s no need to rinse the floor afterwards if you’ve used the correct dilution.
5. Let it air-dry — it dries fast because you’ve kept the water minimal.

That’s the whole routine. Karndean is genuinely low-maintenance when you use the right products — the durability people buy it for only holds up if the wear layer stays intact. The same “sweep first, damp-mop, dry fast” logic applies to other hard floors too, like the ones in our hardwood floor guide. If yours is genuine tile rather than tile-effect LVT, see our old and Victorian floor tiles guide instead.

Removing stains, scuffs and marks from Karndean

Karndean’s smooth wear layer means most marks come off easily if you deal with them promptly and gently. Match the method to the mark:

Golden rule: always start with the gentlest method and escalate slowly. Never reach for a scourer or a solvent to save time — a scratched or clouded wear layer is far harder to fix than the mark you were trying to remove. Test anything stronger than pH-neutral cleaner on a hidden area first.

Reviving a dull Karndean floor: Clean Start and Refresh

If your Karndean has gone dull, hazy or lost its sheen — usually from residue build-up (often washing-up liquid or the wrong cleaner) or years of wear — Karndean makes a two-product system to restore it:

• Karndean Clean Start — a stronger initial deep-cleaner that strips built-up residue and grime back to the bare wear layer. Used when a floor is dull, newly installed, or being rescued. Follow the dilution and dwell instructions, agitate, and remove the residue with clean water.
• Karndean Refresh — a protective dressing applied after Clean Start (or periodically) that adds a fresh protective layer and restores sheen. It’s what brings a tired floor back to looking new, and it renews the surface that daily cleaning gradually wears.

You don’t need these for routine cleaning — pH-neutral cleaner and a microfibre mop handle that. Clean Start and Refresh are the periodic reset, typically once or twice a year in busy areas, or whenever the floor stops looking its best. Using them is far cheaper than replacing flooring, and it’s the manufacturer-approved way to revive Karndean rather than resorting to anything harsh.

Protecting Karndean so it stays like new

• Doormats at every entrance to catch grit before it reaches the floor — grit is the number-one cause of scratches. Choose non-rubber-backed mats, as some rubber and latex backings can permanently stain or discolour vinyl.
• Felt pads under furniture legs, and never drag heavy furniture — lift it, or use furniture slides.
• Soft castors on chairs, or a chair mat under office chairs.
• Wipe spills quickly and avoid letting water pool, especially at joints.
• Blinds or curtains on big sunny windows — prolonged direct sunlight can fade any flooring over years.
• Avoid rubber-backed rugs and mats; use ones labelled colour-fast and vinyl-safe.

Karndean cleaning mistakes that cause damage

• Steam mopping. The big one — damages the wear layer and voids the warranty. Never.
• Bleach or ammonia. Discolours and degrades the vinyl.
• Abrasive pads or scourers. Scratch and cloud the wear layer permanently.
• Washing-up liquid regularly. Builds a dulling film — use pH-neutral floor cleaner instead.
• Over-wetting the floor. Water at the joints can cause problems over time. Damp mop only.
• Dragging furniture. Gouges the surface. Lift, or use pads and slides.
• Rubber-backed mats. Can permanently stain the vinyl. Use vinyl-safe, colour-fast ones.
• Wax or silicone polish. Not needed and builds up; use Karndean Refresh for sheen instead.

Frequently asked questions

What is the best way to clean Karndean flooring?

Sweep or vacuum to remove grit, then damp-mop with a flat microfibre mop and a pH-neutral cleaner — ideally Karndean Clean, diluted at about 50ml per 8–10 litres of warm water. Keep the mop well wrung out so the floor dries fast. Avoid steam mops, bleach, ammonia and abrasives, which damage the protective wear layer.

Can you steam clean Karndean flooring?

No. Karndean does not recommend steam mops, and using one can void your warranty. The heat and moisture penetrate the wear layer and joints, causing discolouration and deterioration over time — damage that’s often permanent by the time it shows. Use a flat microfibre mop with pH-neutral cleaner instead, which cleans just as well without the risk.

What cleaner should I use on Karndean?

Karndean Clean (the manufacturer’s own pH-neutral product) is ideal, but any pH-neutral cleaner that’s safe for vinyl flooring works. Dilute it as directed — roughly 50ml per 8–10 litres of water for Karndean Clean. Never use bleach, ammonia, solvents or, for regular cleaning, washing-up liquid, which leaves a dulling residue.

How do I make my Karndean floor shiny again?

A dull floor is usually residue build-up or a worn surface. Deep-clean it with Karndean Clean Start to strip the residue, then apply Karndean Refresh, which restores sheen and adds a fresh protective layer. Avoid wax and silicone polishes — they build up and cause the exact dullness you’re trying to fix. Refresh once or twice a year in busy areas.

Can you use a vacuum on Karndean?

Yes, but use the hard-floor setting or switch off the rotating beater bar, which can scuff the wear layer. Vacuuming is actually one of the best things you can do, because it lifts the grit that scratches LVT. A soft broom works equally well. Always sweep or vacuum before any wet mopping.

How do you get scuff marks off Karndean?

Rub the scuff gently with a dry or barely damp microfibre cloth; for stubborn black marks, a pencil eraser often lifts them cleanly. For sticky residue, warm soapy water or a tiny amount of isopropyl alcohol on a cloth (tested first) works. Never use solvents like acetone or white spirit, or abrasive pads, which damage the surface.

Why has my Karndean floor gone dull or cloudy?

Almost always residue build-up from the wrong cleaner — washing-up liquid, wax polish or non-pH-neutral products leave a film that dulls the surface. Strip it with Karndean Clean Start, then restore the sheen with Karndean Refresh, and switch to pH-neutral cleaner for daily care. Cloudiness can also come from over-wetting or leftover cleaning solution.

Can you use a rubber-backed mat on Karndean?

Avoid it. Some rubber and latex backings react with vinyl and can leave a permanent yellow or brown stain. Use mats specifically labelled as colour-fast and safe for vinyl or LVT flooring. Doormats at entrances are otherwise a great idea, since they catch the grit that causes most scratches.

How often should you clean Karndean flooring?

Sweep or vacuum regularly — daily in high-traffic areas — and damp-mop weekly or as needed. Wipe spills promptly whenever they happen. Do a deeper clean with Clean Start and Refresh once or twice a year in busy areas, or whenever the floor looks dull. Karndean is low-maintenance, so this light routine keeps it looking new for years.

Does Karndean scratch easily?

Karndean is more scratch-resistant than wood or laminate thanks to its protective wear layer, but no floor is scratch-proof. The main culprits are grit underfoot and dragged furniture. Prevent both with entrance mats, regular sweeping, felt pads under furniture legs and soft castors, and the wear layer stays intact for many years.